NGK B7HS short base candle (hot index)

NGK's B7HS spark plug is a very solid, original type short-base spark plug. Warm temperature we recommend it in winter, it has the right temperature to make adjustments and break-in or to run your original engine all the time or even pushed (kite). It is not made for extreme performance. As this candle is not resistive, it does not require a resistive interference suppressor.

-Reserved for motors: original moderately powerful or very efficient in running in / adjustment, to be fitted with a normal non-resistive interference suppressor.

What does B7HS mean:

- B = Ø14mm base (to be tightened with 20.8mm key)
- 7 = hot thermal index
- H = thread length 12.70mm (short base)
- S = Central copper electrode